In the touch panel menu, Print, where the files are listed, it would be nice if it highlighted the currently printing (or last printed, if not currently printing) file. It is easy to forget which file is being printed when it could have come from local storage, USB, or SD card. Even if you print only from one storage, there could be similar file names or images. It would help if the last file printed can be highlighted or somehow marked. It would be a nice-to-have feature that is simple to program.